Quantifying and reducing concentration polarization in reverse osmosis systems

Bai, Weiliang; Samineni, Laxmicharan; Chirontoni, Progga; Krupa, Igor; Kasák, Peter; Popelka, Anton; Saleh, Navid B.; Kumar, Manish

doi:10.1016/j.desal.2023.116480

Cited by 24 publications

(4 citation statements)

References 157 publications

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“…Table 1 shows that the CP increases directly with increasing pressure, at a pressure of 2.76 MPa it has a polarization factor of 1.14 which is recommended as expressed by Sandin et al (2012) and Kucera (2015). Having a PC value higher than 1.2 leads to unfavorable conditions, which increases membrane fouling (Bai et al, 2023), increased energy consumption (Saeed et al, 2023), reduced permeate water quality and flux (Matthiasson et al, 1980). Values of permeate flow rate (Q v ), permeate flux (J v ) are shown in the table.…”

Section: Polarization Effect Of Concentration At Different Salinitiesmentioning

confidence: 90%

“…al and numerical quantification of the polarization factor ases, almost impossible (Bai et al, 2023). Therefore, the a mathematical model that determines by theoretical and or in a reverse osmosis pilot plant as a function of operating ux (L m -2 h -1 ).…”

Section: Description Of the Reverse Osmosis Plantmentioning

confidence: 99%

“…During a real process, the physical and numerical quantification of the polarization factor becomes difficult and in some cases, almost impossible (Bai et al, 2023). Therefore, the present research aims to obtain a mathematical model that determines by theoretical and experimental methods the CP factor in a reverse osmosis pilot plant as a function of operating pressure (MPa) and permeate flux (L m −2 h −1 ).…”

Section: Introductionmentioning

confidence: 99%

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Determination of the concentration polarization in a reverse osmosis plant to desalinate sea water

Dévora-Isiordia,

Villegas-Peralta,

Piña-Martinez

et al. 2023

RMIQ

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Section: Polarization Effect Of Concentration At Different Salinitiesmentioning

confidence: 90%

Section: Description Of the Reverse Osmosis Plantmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Determination of the concentration polarization in a reverse osmosis plant to desalinate sea water

Dévora-Isiordia,

Villegas-Peralta,

Piña-Martinez

et al. 2023

RMIQ

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show abstract

“…However, despite the maturity of RO technology, there are still some challenging issues that limit its widespread adoption. RO requires high-quality feedwater and is susceptible to membrane fouling, which decreases the permeate flux [9,10]. The desalination process also generates concentrated brine, which poses an environmental threat [11].…”

Section: Introductionmentioning

confidence: 99%

Performance Study on Brackish Water Desalination Efficiency Based on a Novel Coupled Electrodialysis–Reverse Osmosis (EDRO) System

Fu,

Li,

et al. 2024

Water

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Reverse osmosis (RO) is a commonly used desalination technology, but due to high requirements concerning the quality of the feed water, there still exists permeate flux related to the operating conditions, and the solute removal rate is low. Electric fields have a facilitating effect on RO desalination performance. Previous studies have focused on investigating the combination of RO and electrodialysis (ED) processes separately, without directly exploiting their interactions. To address this issue, this study proposes a novel coupling device that combines both RO and ED technologies in a single unit and investigates their mutual enhancement effects on brackish water desalination. The results show that the coupled EDRO system can mutually enhance the performance of RO and ED processes. The permeate flux ratio of the RO membrane increased with increasing voltage, reaching a maximum value of 23.7% at a feed concentration of 10,000 mg/L. The solute rejection by the ion-exchange membrane also increased with increasing pressure, reaching a maximum value of 14.95% at the same feed concentration. In addition, the specific energy consumption of the coupled system was also reduced compared to a standalone operation, with maximum reductions of 9.5% and 19.2% for RO and 2.5% and 3.4% for ED at 5000 and 10,000 mg/L feed concentrations, respectively.

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What does the seawater desalination industry need from polymer scientists?

Fellows

2024

Polymer International

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The seawater desalination industry does not need exotic two‐dimensional materials. However, it faces challenges in terms of membrane resilience to stressors such as temperature and oxidation and especially in the area of (bio)fouling. Membrane replacement is a large part of the operating expenditure of modern desalination plants and anything that increases the effective lifespan of a membrane will have economic impact. There are also emerging requirements for membrane selectivity, especially in desalination‐adjacent brine‐valorisation activities. These challenges provide abundant scope for the exercise of creativity by polymer scientists. © 2024 Society of Chemical Industry.

show abstract

Quantifying and reducing concentration polarization in reverse osmosis systems

Cited by 24 publications

References 157 publications

Determination of the concentration polarization in a reverse osmosis plant to desalinate sea water

Determination of the concentration polarization in a reverse osmosis plant to desalinate sea water

Performance Study on Brackish Water Desalination Efficiency Based on a Novel Coupled Electrodialysis–Reverse Osmosis (EDRO) System

What does the seawater desalination industry need from polymer scientists?

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